The Timeline
From digital-cash precursors to a protocol, market, and political institution. Milestones without price mythology.
Hashcash
Adam Back proposes Hashcash, a proof-of-work system designed to make email abuse costly. It does not create digital money, but it supplies a key building block later cited in the Bitcoin whitepaper.
b-money
Wei Dai describes a pseudonymous electronic cash proposal in which participants maintain a shared record and use computational work and cryptography to coordinate value. The proposal was never fully implemented, but it clarified the shape of the problem.
Reusable Proofs of Work
Hal Finney releases RPOW, a working system for transferring reusable proof-of-work tokens. Its trusted hardware model differs from Bitcoin, but it demonstrates another serious attempt to make scarce digital objects transferable.
The Whitepaper
Satoshi Nakamoto publishes “Bitcoin: A Peer-to-Peer Electronic Cash System” to the cryptography mailing list. The paper combines established ideas—digital signatures, peer-to-peer networking, proof of work, and hash-linked records—into a system intended to prevent double-spending without a central operator.
Genesis Block
The genesis block is mined. Its coinbase data includes a newspaper headline dated 3 January 2009 about a possible second bank bailout. The text timestamps the launch and invites monetary interpretation without specifying a single official meaning.
First Transaction
Satoshi sends 10 BTC to Hal Finney in block 170 — the first peer-to-peer Bitcoin transaction. Finney tweets: "Running bitcoin." He would later be diagnosed with ALS and pass away in 2014.
The Pizza
Laszlo Hanyecz pays 10,000 BTC for two Papa John's pizzas. The first known commercial Bitcoin transaction. The transaction became a permanent reminder that monetary value is easier to see in hindsight than in the moment.
Satoshi Disappears
Satoshi Nakamoto makes a final public forum post and gradually stops communicating over the following months. Development and operation continue without a public founder, reducing one obvious center of authority while leaving ordinary questions of maintenance and coordination.
Hiei's First Contact
A blog post in Chinese. Bitcoin at $1. "It feels devil-like — for anyone who comes into contact with it, this thing could be either a temptation or a plunge into the depths of hell." The post ends: I will stay on the sidelines for now.
I was right about the nature of it. I was wrong about what to do.
First Halving
The block subsidy falls from 50 to 25 BTC at height 210,000. The event demonstrates that issuance follows rules enforced by network software rather than a scheduled policy decision.
Cyprus Banking Crisis
Cyprus imposes capital controls during a banking crisis, while uninsured deposits at major banks face losses under a rescue agreement. The episode becomes an early case study in Bitcoin’s appeal when access to bank money is politically constrained.
Mt. Gox Collapse
Mt. Gox suspends withdrawals and enters bankruptcy after reporting that hundreds of thousands of bitcoin were missing. The network continues operating, but users learn that protocol integrity does not protect assets entrusted to an insolvent or compromised custodian.
Second Halving
Block reward drops from 25 to 12.5 BTC. The supply schedule continues to execute. Predictability is the feature.
The Block Size War
Years of conflict over block capacity culminate in Segregated Witness activation and the creation of Bitcoin Cash under incompatible rules. The episode shows that miners, companies, developers, node operators, and markets all exert influence, but no single group can unilaterally redefine the network everyone else recognizes.
This was the moment I began treating governance as part of the protocol, not a layer outside it.
Third Halving
The block subsidy falls from 12.5 to 6.25 BTC during the first year of the COVID-19 pandemic and extraordinary global monetary and fiscal intervention. The contrast between rule-based issuance and discretionary policy becomes central to Bitcoin’s public narrative.
MicroStrategy Buys Bitcoin
MicroStrategy allocates $250 million of corporate treasury reserves to bitcoin. The decision creates a visible public-company model for balance-sheet exposure, while also introducing leverage, concentration, accounting, and governance questions.
El Salvador
El Salvador becomes the first country to make bitcoin legal tender. The policy turns a voluntary monetary network into a state program, making adoption, merchant obligations, public spending, custody, and democratic accountability part of the same experiment.
U.S. Spot Bitcoin ETPs Approved
The U.S. SEC approves exchange rule changes allowing spot bitcoin exchange-traded products. The wrapper expands brokerage access while replacing direct ownership with claims mediated by sponsors, custodians, market makers, and securities law.
Fourth Halving
Block reward drops from 6.25 to 3.125 BTC. Over 93% of all Bitcoin that will ever exist has been mined. The remaining 7% will be distributed over the next 120 years.
U.S. Strategic Bitcoin Reserve
A U.S. executive order establishes a Strategic Bitcoin Reserve capitalized initially with government-held bitcoin obtained through forfeiture. The policy marks a shift from regulating private exposure to treating bitcoin as an asset of state treasury administration; its long-term legal and political durability remains unsettled.